Compilation
Chrysopsis ballardii
1 Images see all
Name
Identification
Chrysopsis ballardii Rydb. [family ASTERACEAE ] (stored under name); Verified by J.C. Semple, 1997 Heterotheca villosa (Pursh) Shinners [family ASTERACEAE ] Verified by J.C. Semple, 1997
Related name
- Chrysopsis ballardii
- Heterotheca villosa
Flora
Entry for Heterotheca villosa (Pursh) Shinners var. ballardii (Rydberg) Semple [family COMPOSITAE]
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 20,
Names
Heterotheca villosa (Pursh) Shinners var. ballardii (Rydberg) Semple [family COMPOSITAE], Novon, 4: 53. 1994
Chrysopsis ballardii Rydberg [family COMPOSITAE], Brittonia, 1: 100. 1931
Treatment Author(s)
John C. Semple
Information
Stems ascending to erect, 22–50 cm, moderately to densely strigose, eglandular, often abundantly long-hirsute. Distal cauline leaf blades oblong, (18–)22–34(–42) × 4.3–9.3(–12.5) mm, little reduced distally, bases rounded, margins flat, faces moderately strigose (hairs usually not obscuring faces, 20–56(–70)/mm2), eglandular. Heads (2–)4–16(–24), in corymbiform arrays. Peduncles (5–)12–47(–67) mm, moderately to densely hispido-strigose, eglandular; bracts subtending heads leafy, oblanceolate, often exceeding involucres. Involucres broadly campanulate, (5.5–)6.5–9.3 mm. Phyllaries narrowly triangular-lanceolate, moderately to densely strigose, eglandular to sparsely glandular, margins often reddish purple distally. Ray florets (12–)17–30 (avereaging 21), laminae (8.5–)9.9–14.5 mm (averaging 11.5 mm; showy). 2n = 36.
Phenology
jun-aug (summer), oct (fall)
Altitude range
300–2300 m;
Distribution
USA Colo.USA Minn.USA Mont.USA Nebr.USA N.Dak.USA S.Dak.Canada Alta.Canada Man.Canada Ont.Canada Sask.
Discussion
Variety ballardii grows in the northeastern Great Plains; it is rare and probably introduced in Colorado, Montana, and northwestern Ontario. In its typical, large-leaved and many-rayed form, var. ballardii is quite distinct. It is distinguished by its rounded leaf bases, indument of short hairs, eglandular, and large, many-rayed heads often subtended by one or more large, narrow, leaflike peduncle bracts. Plants of var. ballardii are sufficiently similar to those of var. foliosa that the two taxa might be treated as convarietal under the name var. foliosa. V. L. Harms (2003) treated the Saskatchewan plants as members of a more broadly defined var. villosa.